If they can make this work at a reasonable cost the trucking industry is defiantly a place I’d expect to see it. After all fuel efficiency is one of the biggest factors in whether a trucking company makes money or not. I am not sure a dynamic system such as being described in the article makes that much sense for cars and trucks. Making some sort of prefabricated body panels that have some pattern permanent imprinted it in seems like it would be much cheaper and require less long term maintenance.
Dimples are a place for water to collect. Paint nowadays is pretty good, but any break in the paint on a dimpled car would be a big rust problem really quick. It would be a nightmare to repair after an accident. Even if you think the dimples look good, when the water evaporates it will leave water spots and look terrible.